ROSE BENGAL LACTONE
- CAS NO.：4159-77-7
- Empirical Formula: C20H4Cl4I4O5
- Molecular Weight: 973.67
- MDL number: MFCD00013321
- EINECS: 223-993-4
- SAFETY DATA SHEET (SDS)
- Update Date: 2026-05-28 05:40:20
What is ROSE BENGAL LACTONE?
Chemical properties
Bluish-pink powder. Soluble in water.
The Uses of ROSE BENGAL LACTONE
Biological stain; colorant for inks, cellulosics, foods, cosmetics, medicine (diagnostic aid).
What are the applications of Application
Rose Bengal lactone is a useful dye
Preparation
will Resorcinol and 4,5,6,7-Tetrachloroisobenzofuran-1,3-dione condensation, The resulting 4,5,6,7 – tetrachloro-fluorescein tetraiodide.
Properties and Applications
blue light red. Soluble in water for blue light yellow, no fluorescence, in concentrated sulfuric acid for brown, dilution after hot pink precipitation. Used in cosmetics coloring.
| Standard | Light Fastness | Heat-resistant(℃) | water | Sodium Carbonate(5%) | Hydrochloric acid(5%) | |
| Melting point | Stable | |||||
| ISO | Poor | Insoluble | ||||
Properties of ROSE BENGAL LACTONE
| Melting point: | 280 °C (dec.)(lit.) |
| Boiling point: | 741.8±60.0 °C(Predicted) |
| Density | 2.96±0.1 g/cm3(Predicted) |
| pka | 7.03±0.20(Predicted) |
| EPA Substance Registry System | Spiro[isobenzofuran-1(3H),9'-[9H]xanthen]-3-one, 4,5,6,7-tetrachloro-3',6'-dihydroxy-2',4',5',7'-tetraiodo- (4159-77-7) |
Safety information for ROSE BENGAL LACTONE
| Signal word | Warning |
| Pictogram(s) |
 Exclamation Mark Irritant GHS07 |
| GHS Hazard Statements |
H315:Skin corrosion/irritation H319:Serious eye damage/eye irritation H335:Specific target organ toxicity, single exposure;Respiratory tract irritation |
| Precautionary Statement Codes |
P261:Avoid breathing dust/fume/gas/mist/vapours/spray. P264:Wash hands thoroughly after handling. P264:Wash skin thouroughly after handling. P271:Use only outdoors or in a well-ventilated area. P280:Wear protective gloves/protective clothing/eye protection/face protection. P302+P352:IF ON SKIN: wash with plenty of soap and water. P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing. |
Computed Descriptors for ROSE BENGAL LACTONE
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